Four measures to prevent summer corn deficiency
Every year, some growers' corns appear to be incomplete after planting, lacking seedlings and ridges. We should find out the reasons for this phenomenon and take preventive measures in a targeted manner.
First, the most suitable sowing depth for preventing sowing of deep summer corn is 3 to 5 cm. If the planting is too deep, the ground temperature is lowered, and it is easy to plant. Even if it can barely emerge, the seeds will be buried too deeply. The seeds will consume a lot of nutrients before they are unearthed. The roots of the corn seedlings after being unearthed have weaker ability to absorb nutrients. Weak seedlings. Therefore, when planting summer corn, the sowing depth should be minimized under the condition of ensuring soil moisture.
Second, after the ban on burning straw wheat, in order to facilitate the cultivation, some growers leave the wheat stalks in the field, leveling and igniting and burning. After the fire, due to the high temperature, it will kill the microorganisms in the soil that are beneficial to the growth of the crop; it will also decompose the large amount of nutrients in the soil, reduce the soil fertility and the moisture content in the soil, making the corn difficult to emerge, thus harvesting in wheat. It is strictly forbidden to burn straw.
Third, avoiding the use of fertilizer, regardless of the use of artificial, animal power, fertilizer, with the application of seeds, it is easy to appear the phenomenon of chemical fertilizer burning. The seed and fertilizer should be separated by about 10 cm. Most of the corn currently planted by machinery can be separated from seeds and fertilizers.
Fourth, the change of incurable armyworm is the main pest during wheat ripening. Some growers only pay attention to the harvesting of wheat and the sowing of corn, and often ignore the control of sticky insects after sowing. The mature larvae left in the field and the re-hatched larvae, after the corn emerged, began to bite the corn seedlings that have just grown. When the sticky worms are serious, the whole corn stalks will be eaten. Re-destroy. Therefore, after the emergence of corn, it is found that there are sticky insects to eat bites, and it is necessary to apply the medicine in time.
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